Baby eating milk powder urine is very yellow, may be certain physiological factors, may also be the symptomatic manifestation of certain diseases, such as urinary tract infection, hemolytic anemia and so on. 1. Physiological factors: the baby’s normal urine is light yellow or yellowish, and transparent and clear. Babies in the process of formula feeding, if the amount of water to drink less, the amount of body fluids is insufficient, can lead to urine concentration, there will be a very yellow urine phenomenon. 2. Pathologic factors: (1) urinary tract infection: due to the baby’s low immunity, when bacteria, fungi, viruses and other pathogens multiply abnormally in the urinary tract, it can lead to urinary tract infection, which can lead to painful urination, cloudy urine, yellowing and other symptoms. (2) Hemolytic anemia: refers to anemia that occurs when red blood cells are destroyed and exceed the compensatory capacity of bone marrow hematopoiesis. Children with hemolytic anemia may contain bilirubin in the urine, resulting in yellow urine, which may be accompanied by vomiting, headache, chills and other symptoms. The baby ate milk powder urine is very yellow, there may be other reasons, it is recommended to go to the hospital in time to improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.